/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.ambari.server.logging;

import java.util.Map;
import java.util.concurrent.locks.Lock;

/**
 * Interface for lock implementations that should be profiled and need
 * the assistance of LockProfileDelegate to achieve it.
 */
interface ProfiledLock extends Lock {

  /**
   * @return true if the lock is already held by the current thread
   */
  boolean isHeldByCurrentThread();

  /**
   * @return time spent waiting for the lock (in milliseconds) by thread name
   */
  Map<String, Long> getTimeSpentWaitingForLock();

  /**
   * @return time spent holding the lock (in milliseconds) by thread name
   */
  Map<String, Long> getTimeSpentLocked();

  /**
   * @return the number of times the lock was taken by thread name
   */
  Map<String, Integer> getLockCount();

  String getLabel();
}
